Liquid-fuel stove.



J. s. BRENNAN N A. i1. LINDEMANN. LIQUID FUEL STOVE. APPLICATION FILED lPlL'lfl. l9 IB- 1,274,134. Patented July 30,191&

.Atty

UNITED STATES PATENT OFFICE.

JOHN s. nnmunx AND ALBERT .1. LmnEmn', or mnwauxnn, wrsconsm, Les on ons To A. .1. LmDEMANN a HOVERSON COMPANY, 01 MILWAUKEE, WISCONSIN, A

CORPORATION OF WISCONSIN.

LIQUID-FUEL STOVE.

Application filed April 18, 1818. Serial No. 229,254.

To all whom it may concern:

Be it known that we, Join: S. BRENNAN and ALBERT J. LINDEMANN, citizens of the United States, and residents of the city of Milwaukee, in the county of Milwaukee, State of Wisconsin, have invented certain new and useful Improvements in Liquid- Fuel Stoves, of which the following is a specification.

The improvements relate to liquid fuel stoves and particularly to such as are ordinarily employed in the burning of liquid hydrocarbons such as kerosene, and its objects are, among others, to provide an improved liquid fuel stove in which the combustion in each burner may be started, regulated and extinguished by regulation of the oil supply and without employing a. cotton wick. Such burners are commonly called wickless burners, and are provided with a relatively shallow fuel trough having therein a'sh'ort wick of asbestos, or other incombustible ab.- sorbent, from which the liquid hydrocarbon is vaporized. Blue-flame combustion tubes are also usually provided and are seated on the upper edges of the trough. The use 01' the devices here in question is not limited, however, to burners of this particular character, In the embodiment of the invention herein described and shown the fuel is regulated by mean-s of devices which raise and lower the burner trough with respect to the maintained oil level of the reservoir, there' by controlling the depth of liquid in the trough or draining it, and in this manner the use of valves for that purpose, with their attendant disadvantages is dispensed with.

Stoves of this general character have been employed for many years, but so far as is known are open to one or more of the fol' lowing objections. Where the tube leading up to the burner trough is arranged to slide or telescope in a tube leading up to it, and a stuifin box is required, leakage often results, eit er from deterioration of the packing or injury to the tubes or the stufling box, or from some other cause. -Where the reservoir and burner are connected by a rigid pipe and one or the other or both raised or lowered, it is necessary to provide a reservoir or tank for each burner, or the burners cannot be separately regulated, where a plurality of burners are employed. This construction also necessitates a slight tilting movement of one part or the ot er and a corresponding disturbance of the oil level therein. These objections apply whether the parts are mounted to haven rocking motion or the flexibility of the supply pipe is depended upon. In all forms, the fact that the trough with its superimposed burner parts or the reservoir is vertically movable gives rise to the danger that it will be moved accidentally, and the fluid level thus changed unintentionally; and the adjustable mounting of the parts is attended with the in-' 'herent objection that they are not as'strong or as stable as they would be if rigidly and immovably supported, The present improvements are designed to overcome these and other objections, and to provide a device of the character described in which an accurate regulation of the combustionmay be obtained independentl in each of a plurality of burners fed rom a common reservoir, and in which the adjustable part issecurely supported in all positions and reinforced against accidental movement or' injury, and all danger of leakage avoided.

An embodiment of the invention is illustrated in the accompanying drawings, in

which Figure 1 is an outline or diagrammatic front view of a reservoir and two burner troughs in operative relation em' bodying the improvements. Fig. 2 is an enlarged back elevation ofone of the burner troughs and adjacent parts, mounted on the main fuel supply pipe. Fig. 3 is a side elevation of the parts shown in Fig. 2. Fig. 4 is a horizontal section on the line 4.-4 of Fig. 3, looking in the direction indicated by the arrows in that figure. Fig. 5- is a view similar to Fig. 2 of a modified form of flexible supply pipe.

E The supply pipe A communicates with the reservoir B through the branch pipe C and with each burner througha flexible pipe D,

Patented July so, 1918.

and may be mounted in any suitable stove i connected with t nipple H on the end of the urner pipe and the compression screw J by which it is held securely seated in the oil passage G. In this manner communication between the burner and the main supply pipe is established, through a flexible conduit which permits the burner to be raised and lowered,

without afi'ecting the flow of liquid between the two or causing danger of leakage. On

the pipe A at the junction of the coiled burner tube is mounted a frame K, preferably made of a piece of sheet metal having its ends K turned down and recessed so as to form a saddle resting on the upper-surface of the said supply pipe, and its sides K and K turned down so as to lie-on the sides of the pipe. It is secured against turning movement on the pipe by having the oil passage pipe G passed through it and being clamped between this pipe and the frame G which is threaded on the exterior of the former.

The part K has an interned slotted flange K2 and in the upper horizontal portion of K is a slot of similar form and alined there- .80 with, so that the two slots will receive the rigid upright support L for the burner trough and permit it to slide vertically therein. The upper end of the support L has an extension L projecting inwardly and upwardly and secured to the burner trough, and at its lower end, and below the slotted flange -K*, it has a pin L" which extends through the volute slot M of the rotary disk M. In this manner provision is made for raising and lowering the sliding sup port L, and with it the burner trough, and. holding them securely in all positions.

The disk M is mounted on the part K by having the pivot bolt N passed through the depending portions K and K and secured against retraction by the nut N. The disk is rigidly connected with the bolt, and to the outer end of the bolt is keyed a handle O'by which the said bolt and the disk may liO' be rotated. The bolt N also passes through a slot L in the reciprocating support L, and the said bolt turns freely in the part K, so that the disk may rotate freely and the said support move freely up and down and at 66 the same time be securely held against movement in all other directions.

It will be seen that rotation of the disk in clockwise direction lowers the burner trough, and that rotation of the same in the opposite or counter-clockwise direction raises the trough, and that any vertical pressure or strain on the burner or the sliding support L is resisted by the edges of the slot M, in which the pin L fits snugly. This is the case at 'all times and with the pin at all points in the slot or way. Lateral pres sure or strain on the parts is resisted by the frame K, in the slots of which the support L fits without room for pla In order to facilitate t e use of the raismg and lowering device for regulating or extinguishing the'flame of the burner 'suitable markings ma be placed on the disk M to indicate the e ect of different positions thereon, the head of the pin L being formed into a pointer directed toward the said markings. Thus with the pointer opposite the numeral 4 the burner trough is in its highest position, so that the oil will drain ther'e- Y from, owingtothe factthat in this osition it is above the maintained oil level of the tank, and the flame will be extinguished- With the pointer opposite the numeral 1-in the opposite end of the slot-the trough will be in its lowest position and the level of oil near the top of the trough. This position enables the operator to flood the burner trough quickly and saturate the wick for lighting. The numeral 2 indicates the position for high flame and the numeral 3 the position for low flame; and any desired positions between the two extremes may be used.

In the modification of Fig. 5' the burner pipe D is coiled substantially in a vertical plane, and it will be understood that various other forms may be employed. With this form the other parts and their arrangement is the same as in the preferred form.

In operation the disk M is rotated until the pin L is at or near the outer end of the way M, and the burner trough thus lowered to the flooding point. The wick F is thenlighted, and the flame may be adjusted to any desired height by turning the disk in counter-clockwise direction. When it is desired to extinguish the flame, the disk M is rotated until the pin L is at or near the inner-end of the way M, thus raising the trough above the maintained oil level and draining it. Various changes in the details of construction and arrangement herein shown and described may be made without departing from the scope of the invention.

What we claim is:

- 1. The combination with a reservoir having a maintained oil level and a burner trough, and an oil supply conduit communicating between said reservoir and trough, of means for raising and lowering the trough with respect to the said oil level comprising a flexible pipe at the end of the conduit nearest the burner, a sliding support connected with said trough and a rotary member with which said support is movably 25 connected.

2. The combination of a reservoir having a maintained liquid level, a main supply pipe communicating therewith and extending laterally therefrom, a burner trough and trough to be movedtoward and from the main supply ipe. I I

3. The com ination of a reservoir having a maintained liquid level, a main suppliy' pipe communicating therewith and exten in laterally therefrom, a burnertrough and a ranch supply pipe-extending from said main supply pipe tothe trough, saidbranch supply pipebeing composed of a single piece of tubing bent between its ends and thereby made flexible and permitting the burner trough to be moved toward and from the main supply pipe, and means for moving the said burner trough comprising a rigid member and a support therefor, and a movable connection between the said rigid member and its support.

4. The combination of a reservoir having a maintained liquid level, a main supply pipe communicating therewith and extendm laterally therefrom, a burner trough and a %ranch supply pipe extending from said main supply pipe to the trough, said branch supply pipe being composed of a single piece of tubing bent between its ends and thereby made flexible and permitting the burner trough to be moved. toward and from the main supply pipe, and means for moving;

the burner trough comprising a support, a member connected with said support and the burner trough, and means for moving the said member on its support. 5. The combination of a reservoir havin a maintained liquid level, a'main fluid supply pipe extending therefrom, a burner trough, a branch supply pipe connecting said trough and main suppl supply pipe being flexi 1e and permittlng the trough to be moved to different positions with res ct to said main pipe, and means for movlng said trough comprising a supporting member-connected with the troug a support for said member on a rigid part and means for moving said'supporting member on. its support.

6. The combination of a-reservoir having a maintained liquid level, a main fluid supply pipe extending therefrom, a burner trough, a branch supply pipe connecting said trough and main supply pipe, said branch supply pipe being flexible and permitting the trough to be moved to different posi tions with respect to said main pipe, means for moving said trough comprising a supporting member connected with the trough, a support for said member on a rigid part and means for moving said supporting member on its support, comprising a part extending from the supporting member, a rotatable member and a sliding connection between vwithwhich the extendin tact whereby rotation o the former causes tions.

pipe, said branch said rotatable member and extending member, a cam surface on said rotating member member 1s in conangular movement'of the latter.

7. The combination of a fluid reservoir having a maintained liquid level therein, a main suppl pipeextending therefrom, a

plurality 0 burner troughs, a branch sup- :P y

pipe secured to each burner and commumcating with'the main supplypipe, said branch supply, pi e being curved mtermedi ate their extremit es and thereby being made flexible to permit the tro'u hs to be raised and lowered, and means or raising "and lowering a trough comprising a rigid trough supportlnf member, a sliding connection between sai member and the supply pipe, and meansffor movin T the said member vertically and automatically holding the same in different positions against vertical strain.

8. The combination of a fluid reservoir having a maintained liquid level therein, a main supply pipe extendingv therefrom, a plurality of burner troughs, a branch supply pipe secured to each burner and communicating with the main supply pipe, said branch supply pipes being curved intermediate their extremities and thereby belng made flexible to permit the troughs to be raised and lowered, and means for raising and lowering a trough, a disk, a cam surface on said dis a member connected with a trough and having a portion in contact with said cam surface,-whereby movement of the diskmoves the trough to different posi- 9. The combination of burnertroughs, a liquid fuel tank having a maintained oil level, a main fuel su ply pipe extending from said tank, exlble branch pipes secured to the troughs and to the main supply pipe, each composed of a single piece of tubing,and means for raising and lowering'a burner trough comprising a movable member, a cam way in said movable member, a connection between said cam way and a burner trough, and means .for moving the said member bearing the cam way and thereby causing movement of the trough in directions angular to the cam way.

10. The combination of a liquid fuel reservoir, a main fuel supply pipe extending therefrom and adapted to supply liquid fuel to burners, a burner trough and a branch supply conduit consisting of an uninterrupted tube secured at one end to the main supply ipe, and at its other end to the trough, ormed in convolutions intermediate its ends.

11. The combination of a liquid fuel reservoir, a main fuel supply pipe extending therefrom and adapted to supply liquid fuel to burners, burner troughs and a branch supervoir, a main fuel supply p1 therefrom andadapted to supp y liquid ply conduit for each burner consistin of an un nterrupted tube secured at one en to the main supply pipe,'and at its other end to the trough, formed in convolutions intermediate its ends.

12. The combination of a liquid fuel rese extendi fue to burners, a burner trough and a branch supply conduit consisting of an uninterrupted tube secured at one end .to the main supply pipe, and at its other end to the trough, ormed in convolutions intermediate its ends, and means for raising and lowering the trough without disconnecti% or afl'ecting the continuity of thesaid tu 13.'The combination ofa liquid fuel reservoir, a main fuel supply pi e extending therefrom and adapted to supp y liquid fuel to burners, a burner trough and a branch supply conduit consisting of an uninterrupted tube secured at one end to the main supply ipe, and at its other'end to-the trough, ormed in convolutions intermediate its ends, means for raising and lowering the trough without disconnectin or affectmg the continuity of the said tu e, comprising a movable member secured to the trough, and means for moving the said member and the trough toward and from the main supply p 14. The combination of a liquid fuel reservoir, a main fuel supply pipe extending therefrom and adapted to supply liquid fue to burners, a burner trough and a branch supply conduit consisting of an uninterrupted tube secured at one end to the main supply; ipe, and at its. other end to the trough, ormed in convolutions intermediate its ends, means for raising and lowering the trough w1thout disconnectin or afiecting the continuity of the said tu comprising a movable member secured to the trough, and means for moving the said member and the trough toward and from the main supply ipe and for holding the said movable mem r automatically in different positions.

15. The combination of a liquid fuel reservoir, a. main fuel supply pipe extendin' therefrom and adapted to supp y liquid fue to burners, a burner trough and a branch suppl conduit consisting of an uninterrupte tube secured at one end to the main suppl ipe, and at its other end to the troug its ends, and a movable member mounted on a fixed part and connected with the trough whereby the said trough may be moved with respect to the main supply pipe without afiecting the continuity of the tube, said movement of the trou h being per mitted by the flexibility of t e tube.

116. The combination of a burner trough,

a li uid fuel supply pi e a flexible pipe conneciz 'mg the trough and the fuel supply'pipe,

and means for raising and lowering the trough comprising a disk rotatably mounted on a fixed part, a splrate slot in said disk,- a keyg'in sald slot adapted to be moved radially of the disk through rotation of said dis and aconnection between said key and the trough. 17. The combination of a burner, a reservoir, a rigidly mounted liquid fuel supply ipe leading from said reservoir, and a flexile branch supply pipe communicating between said first supply pipe and the burner, said branch supply pipe extending upwardly from the first pipe and being lengthwise extensible.

18. The combination of a burner, a reservoir, a rigidly mounted liquid fuel supply pipe leading from said reservoir, and a flexible branch supply pipe communicating between said first supply pipe and the burner, said branch supply pipe extending upwardly from the first pipe and being lengthwise extensible, and means for raising and lowering the burner without moving the first supply pipe.

Witness our hands this 9th day of April, 1918, at the city of Milwaukee,in the county of Milwaukee, State of Wisconsin.

JOHN s, BRENNAN.

ALBERT J. LINDEMANN. 

